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Cam – 4.0 mm Shaft Diameter 4 Chuffs GME-4-4.0 Cam – 5.0 mm Shaft Diameter 4 Chuffs GME-4-4.5
Cam – 4.5 mm Shaft Diameter 4 Chuffs GME-4-5.0
Glue this cam to the driver axle and use the Grizzly Mountain Engineering Wiper Mount Kit to complete the circuit.
Select the number of chuffs per revolution of your axle and your driver axle outer diameter. About 90% of the HO locos have a 3 mm axle.
Please note: The companies we buy from are in the process of updating their prices for 2023. Prices on our website are subject to change at this time. Dismiss